baber/WOPTO huggingface dataset:
Patent GB-1361903-A (GB)
Title: Luminescence diode and process for the production thereof
IPC: H01L21/208
Filed: 1972-05-03
Abstract: 1361903 Luminescent diodes WERK FUR FERNSEHELEKTRONIK VEB 3 May 1972 20563/72 Heading H1K A luminescent diode or optical-electrical conversion device of A<SP>III</SP>B<SP>V</SP> material in which A.C. modulation is superimposed on its radiation for information transmission, has a lateral strip radiating layer and comprises a diode structure (Fig. 1) having adjacent P<SP>+</SP>, P, N<SP>+</SP> regions with a donor/acceptor concentration characteristic (Fig. 2) produced epitaxially from the liquid phase in a tilting Nelson apparatus having therein a closable quartz ampoule containing a graphite boat for the melt; the requisite diode structure being formed from a non-stoichiometric melt at a suitable temperature. The melt comprises GaAs:Ga:Al:Zn in proportions of 1 : 4.7 : 0À02: 0.03, and after growth formation at 930- 780‹ C., is thermally annealed in H 2  in a closed quartz tube to produce a symmetrical absorption profile (Fig. 3). Alternatively the device may be produced by single stage thermal diffusion of ZnAs into GaAs within an ampoule, or by a two stage diffusion first from a ZnGa source and second from a Zn 3 As 2  or ZnAs 2  source; the intensity of radiation and delay time characteristic being functions of the lateral displacement along the light emitting region (Fig. 4). The radiation intensity distribution forms symmetrical polar lobes with maxima in the PN junction plane as optical axis (Fig. 5, not shown). The luminescent diode may be combined with a photoelectric diode so that the optical signal may be reconverted into an electrical signal.
Patent GB-736927-A (GB)
Title: Improvements relating to chairs, seats and the like
IPC: A47C3/04
Filed: 1953-07-24
Abstract: 736,927. Spring upholstery. BIDDULPH INDUSTRIES, Ltd., BIDDULPH, C. L., and REASON, N. P. July 6, 1954 [July 24, 1953], No. 20565/53. Class 52 (4). In a tubular framed chair or stool in which the seat and/or back are sprung by helical tension springs 19, the ends of the latter are hooked into apertures 22 in the tubular side members 11 and the springs are sheathed in flexible tubes 20 preferably of polyvinyl chloride. Preferably, the apertures are disposed slightly inwardly of the crown of the tube.
Patent GB-1004760-A (GB)
Title: Combined tanker service unit
IPC: B63B57/02
Filed: 1963-05-23
Abstract: 1,004,760. Cleaning tanks. ALGONQUIN SHIPPING & TRADING Ltd. May 23, 1963 [March 30, 1963], No. 20621/63. Heading A4F. [Also in Divisions A5 and B7] A service unit 5 for installation within fluid-containing tanks comprises a vertically disposed tubular structure, said structure having heating sections 8, 9, 10 and diffusion sections 11, said diffusion sections having nozzles 32 for the ejection of a cleaning fluid; means to supply a heating medium to said heating sections, means 31 ,to exhaust condensate from said heating sections and means for supplying cleaning fluid to said diffusion sections. As shown, steam supply lines 39 are provided with branch lines 40 leading to connections (Figs. 3, 5 or 11 or 12, not shown) at each of the service units 5. The steam flows into upper section 8 and then flows successively through heating sections 9 and 10 via connecting pipes 30 (Fig. 5, not shown). Condensate is exhausted from the bottom of the unit via exhaust pipe 31. For tank cleaning valve 38 is opened allowing seawater under pressure from mains 35 to pass through connection 16 down into the upper diffusion section and thence through pipes 27 into lower diffusion sections. This pressure water passes through nozzles 32 which are located in large numbers in both side walls 28 and conical end wall 29, said nozzles being adjustable in a plane at 90 'degrees to the axis of the structure (Fig. 14, not shown). The uppermost of any adjacent pair of diffusion sections being provided with a greater number of nozzles than the diffuser section immediately below. A steam connection 41 is fitted at all connections 16 for the purpose of supplying . fire smothering steam to the unit. The heating sections each have open-ended pipes 33 passing through them, the pipes 33 being alternatively set at right angles to each other (Fig. 6, not shown). Fluid contained in the tank thus being allowed to flow through the heating sections as well as over the fins (Fig. 3, not shown) attached to the outside surface of said heating sections. The lower end of the tubular structure is provided with a spigot 20 supported by angle pieces, said spigot being received by a sleeve (Fig. 13, not  shown).
Patent GB-347062-A (GB)
Title: Improvements in and relating to detachable vehicle wheels
IPC: B60B3/14
Filed: 1930-07-08
Abstract: 347,062. Detachable wheels. HAHL, T., 18, K÷niggrõtzerstrasse, Merscheid, Solingen, Germany. July 8, 1930, No. 20686. [Class 144 (i).] A detachable wheel a having recesses or holes engaging taper dogs f projecting from the brake-drum t or the flange d of the permanent hub b, is secured by a central nut c, radial clearance x being provided between the wheel and the hub b so that all stresses between the wheel and the dogs is transmitted to a flange i on the nut c.
Patent GB-860472-A (GB)
Title: Improvements in and relating to adjustable shutters or louvres
IPC: F24F13/15
Filed: 1958-06-27
Abstract: 860,472. Ventilators. TAYLOR, W. H. June 27, 1958, No. 20712/58. Class 137 Louvres 2 are pivoted at 6 in a frame 1, an arm 9 being keyed to each pivot 6 and ending in a cam 11 which is engaged between pressed up lugs 13 on an operating bar 12 so that longitudinal movement of the bar rotates the louvres. A cam 15 engaged between lugs 19 on the bar 12 is pivoted on a quadrant 17 and is operated by a handle 18 carrying a catch 23 engaging teeth on the quadrant.
Patent GB-884854-A (GB)
Title: Improvements in air or gas blast electric circuit-breakers
Inventor: ROXBURGH ALBERT
IPC: H01H33/867
Filed: 1957-07-01
Abstract: 884,854. Gas-blast switches. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. June 23, 1958 [July 1, 1957], No. 20717/57. Class 38 (5). A gas-blast circuit-breaker with a resistance and auxiliary contacts in parallel with the main contacts is arranged so that the auxiliary contacts are controlled by the movement of the main contacts to open after and close before the main contacts. As shown, for one unit of a multibreak circuit-breaker, the fixed contact 1 is engaged by a hollow movable contact 2 biased by a spring 20 and having its end formed as a piston 11 slidable in a cylinder 12. A fixed tubular casing 7 surrounds the contact 2 and is apertured at 29 and at 28 in its fixing flange 9. A ring piston 26 has a trunk 27 slidable within the casing 7 and is biased away from a flange 30 on the piston 11 by a light spring 32. When pressure gas is admitted to the passage 6 by a blast valve such as that described in Specification 821,659, it passes through apertures 28 so that the piston 26 is moved to strike the flange 30 and move the contact 2 until the piston 26 is stopped by ends 34 of the part of the casing 12 in which it moves. Pressure gas also passes into the chamber 36 through apertures 29 and passages 35 in the flange 30, and when this is sufficient to overcome the spring 20 the contact 2 is moved further to the left until its end 21 seals the exhaust port 18. The auxiliary moving contact 40 is biased to the open position by a spring 47 and has a sliding pin-and-socket connection with a member 51 on the end of a lever 37 which is pivoted at 38 and carries a roller 52 engaging a cam surface on the piston 11. During the second stage of the contact movement the roller 52 passes down the surface 53 allowing the spring 47 to open the auxiliary contacts. Since the chamber 43 is in communication with the chamber 36, the contacts 40, 42 are surrounded by gas under pressure during their opening. When the passage 6 is vented to the atmosphere the contacts reclose, the auxiliary contacts making first and the chamber 36 being vented to the atmosphere at the end of the closing stroke through a port 12a in the cylinder 12. Passages may be provided between the flange 30 and the interior of the piston 11 to assist in this venting (Fig. 4, not shown). Specification 884,853 also is referred to.
Patent GB-1464964-A (GB)
Title: Unsaturated polyesters and their use as binders for glass  fibres
IPC: C08G63/676
Filed: 1974-05-10
Abstract: 1464964 Unsaturated polyesters KAO SOAP CO Ltd 10 May 1974 [16 May 1973] 20782/74 Heading C3R [Also in Division D1] A binder for glass fibres comprises an unsaturated polyester in the form of an oil-inwater emulsion, the polyester being derived from (a) 1 mole of an unsaturated dibasic acid component containing at least 50 mole per cent of fumaric acid or maleic anhydride, (b) 1 to 1À5 moles of a diol component containing at least 30 mole per cent of an adduct of 2-10 moles of an alkylene oxide and bisphenol A, and (c) either (i) an adduct of 5-200 moles of an alkylene oxide and castor oil or hydrogenated castor oil, or (ii) polyethylene glycol of molecular weight 1000-6000, the amount of (c) being 5 to 30 parts by weight per 100 parts by weight of (a) and (b), the emulsion containing from 1 to 35% by weight of the polyester. The Examples describe unsaturated polyesters prepared from the following compounds:- fumaric acid, maleic anhydride, phthalic anhydride, the adduct of ethylene oxide or propylene oxide and bisphenol A, propylene glycol, hydrogenated bisphenol A, the adduct of ethylene oxide and castor oil or hydrogenated castor oil, and polyethylene glycol.
Patent GB-1167132-A (GB)
Title: Improvements in or relating to Electronic Circuits for Switching an Inductive Load.
Inventor: WOODLEY FRANK JOHN
IPC: H03K17/60
Filed: 1966-05-11
Abstract: 1,167,132. Selective printing. INTERNATIONAL COMPUTERS Ltd. 1 May, 1967 [11 May, 1966], No. 20851/66. Heading B6F. [Also in Division H3] In an electronic switching circuit for energizing an inductive load, such as a print hammer coil, the voltage across the load is initially limited to an adjustable value less than the supply voltage. In the case of a print hammer, this enables adjustment of the delay before the force is sufficient to overcome that of the restraining spring so that the delay before the hammers print may be equalized. In Fig. 1, when the electronic switch 2 is first made the voltage across the load is limited to an adjustable value by, for example, a number of zener diodes selectively connectible across the load. The current rises until the voltage drop across the limiting resistor reduces the load voltage to a value less than that selected, whereafter the current rise is determined by the supply voltage. In Fig. 2, when T1 is cut off, T2 conducts and energizes the coil 13. The voltage at the lower terminal of the coil is initially clamped by a zener diode 10 in series with the emitter base path of T2, the clamping voltage being adjustable by resistor 16. The resistor and diode are also in a negative feedback path to the base of T2 which assists in stabilizing the initial voltage as the current rises the voltage drop across the limiting resistor increases and at a given value diode 15 cuts off. The transistor T2 now saturates and the full supply voltage becomes effective to complete the travel of the hammer.
Patent GB-721112-A (GB)
Title: Improvements in or relating to lighting and like circuits
IPC: H01H47/26
Filed: 1953-07-28
Abstract: 721,112. Switching systems; transformer systems. PHILIPS ELECTRICAL INDUSTRIES, Ltd. July 28, 1953 [July 31, 1952], No. 20899/53. Class 38 (4). In a variable voltage supply system for an aerodrome lighting, or other, load 10, comprising a potentiometer or transformer winding 3 having tappings to which the load may be selectively connected by contacts 7-9 of relays 14-16 which are individually operated by manual switches 20-22 in an A.C. control circuit including the coils 17-19 of the relays, short-circuits between the tappings, due to failure of a relay to release when changing from one voltage to another, is prevented by the provision of (a) an acceptor circuit 23, 24 in the common lead to the relay coils, and (b) auxiliary relay contacts 25-27 adapted to short-circuit the condenser 24 of the acceptor circuit when any relay pull-in, thereby reducing the voltage across the coil of the operated relay to a holding value which is insufficient to allow actuation of another of the relays should the first relay fail to release upon opening of its appropriate switch 20-22. The impedance of the reactor 23 may be approximately equal to that of the separate relay coils in the deenergized condition of the relays.
Patent GB-692496-A (GB)
Title: Improvements in or relating to gearing for steering mechanically propelled vehicles and for other purposes
IPC: B62D3/06
Filed: 1950-08-23
Abstract: 692,496. Toothed gearing; cams. BISHOP, R., and JOHNSTON, R. H. Aug. 23, 1951 [Aug. 23, 1950], No. 20911/50. Classes 80 (i) and 80 (iii). In a steering or other gear, a worm groove 1 is of normal width over about one central turn but widens towards each end, and is engaged by two teeth or pins, a master pin 4 and a smallerdiameter slave pin 5, carried by a follower on a rocker shaft 7. The pin 4 fits correctly 'the normal width portion 6, Fig. 3, in which it is central for straight-ahead steering, when the angle between the plane XX containing the axes of pin 4 and shaft 7 and the plane YY normal to the worm axis and passing through the axis of shaft 7, is substantially equal to the pitch angle of the worm. As the follower is moved towards left lock the pin 4 enters the widening portion 9 of the groove and drive is effected, with a certain amount of backlash, through the smaller pin 5. Towards right lock the pin 4 operates, with backlash, in the widening portion 8. The portion 8 widens at a slower rate and over a greater length than the portion 9. The two-pin follower allows a greater angular movement than a one-pin follower and since the one pin does not operate until the play between the other and the groove is greater than its own, the operation of the gear is not affected by slight errors in manufacture. A spring, (not shown), urges the shaft 7 axially away from the groove 1. The worm flanks may be concave to engage convex teeth on the follower, and the worm flank may be barrel shaped. The follower teeth may be spaced by only a single pitch and there may be two or more slave teeth. Specifications 502,035, 502,036 and 536,183 are referred to.
Patent GB-1129077-A (GB)
Title: Improved process and apparatus for electrographic printing
IPC: G03G15/34
Filed: 1966-05-11
Abstract: 1,129,077. Electro-graphic printing. SOCIETE INDUSTRIELLE BULL-GENERAL ELECTRIC. May 11, 1966 [May 11, 1965], No.21001/66. Heading G2H. A web 1 of paper is loosely coated with toner powder by passage under distributer 3 before passage through a gap between electrodes 4 and 5 to which a high voltage is applied through terminals 6. The electrode 4 comprises a light permeable conductive layer. A light beam 7 is directed on to the surface of the electrode 4, such that toner is caused to adhere to the web 1 at the area where beam 7 impinges due to the field intensity being sufficient to produce break down or a high displacement current. A vibrator 10 removes loose toner particles, the particles remaining being fixed by a heater coil 12. The beam may be visible or ultraviolet light. In a modification, the surface of electrode (4) Fig. 3 (not shown) adjacent the web (1) has a photo-conductive layer (17). The electrode (4) Fig. 4 (not shown) has recessed zones (20) at which the field is more concentrated. In other embodiments, Figs. 5 and 6 (not shown) the light is produced by the screen of a cathode ray tube (21) or (28) respectively.
Patent GB-767677-A (GB)
Title: Improvements in or relating to servo and directly operated hydraulic brake systems
IPC: F16D65/28
Filed: 1953-07-29
Abstract: 767,677. Hydraulic brakes. WAGNER ELECTRIC CORPORATION. July 29, 1953 [Aug. 9, 1952], No. 21020/53. Class 103 (1). An hydraulic brake system for application to industrial plant comprises a servo-unit 14 having a servo-piston 160, subject to the delivery pressure from a continuously running pump 134, the piston 160 applying thrust through rod 162 to the piston 182 of a master cylinder 180 from which pressure is applied to the brake cylinder 16. Normal control is by means of an actuator device 12, having a shaft 66, which when pad 70 is depressed, seals off port 90 in a piston 92 compressing liquid underneath. The device 12 therefore acts as a master cylinder which applies pressure through conduit 28 to one face of a by-pass piston 148 in the servo unit 14. The delivery from the pump 134 passes through connection 132 to the space in cylinder 124 on one side of the servo-piston 160 and the movement of the by-pass piston 148 to the right throttles the return of fluid to the suction side of the pump so that a pressure is produced to move piston 160 to the right and thrust is also applied to the master cylinder piston 182. The cylinder 180 which normally has its right-hand end out of contact with a gasket 192 is moved to the right by the friction between the piston 182 and the cylinder barrel so that communication with the surrounding space is sealed off, pressure fluid then being supplied through the end connection to the brake cylinder 16. Connected to the brake cylinder 16 is a unit 20 which acts both as a reservoir and as a device for bleeding air from the system. In the event of malfunction of the servo-unit 14 the brake can be applied by a conventional master cylinder unit 18 delivering pressure fluid by way of a two-way shuttle valve 30. The actuator device 12 in particular forms the subject matter of Specification 767,678.
Patent GB-1502391-A (GB)
Title: Gripping or clamping devices
IPC: B65H51/18
Filed: 1976-02-24
Abstract: 1502391 Releasable fastenings INTERNATIONAL COMPUTERS Ltd 24 Feb 1976 [17 May 1975] 21095/75 Heading E2A In a device for gripping and feeding wire 8 through guides 6, an elastomeric tube 5, e.g. of rubber, is closed on the wire by pneumatic pressure at 7, or, if the tube normally grips the wire, it is dilated to release it, by suction at 7. To feed solder 22, Fig. 2, grippers as shown in Fig. 1 are mounted on fixed and movable arms 9, 10, a control valve 14 being controlled by photo-electric means 19, 20, 21 on the movable arm.
Patent GB-704521-A (GB)
Title: Improvements in or relating to bells
Inventor: BOULSTRIDGE THOMAS JAMES
IPC: G10K1/074
Filed: 1952-08-22
Abstract: 704,521. Cycle bells. PHILLIPS & CO., Ltd., J. A. Aug. 22, 1952, No. 21104/52. Class 13. In a bell in which two opposed domed gongs 10, 11 and the actuating mechanism are mounted on a common support 13, a clapper 25 operatively connected by a blade spring 31 to an actuating lever 19 strikes first one gong and then the other when moved in opposite directions by successive manual operation and spring return of the lever 19. The clapper 25 has heads 35, 36 bent in opposite directions and is connected to the upper arm 27 of a torsion spring 26, the lower arm 28 of which passes through an aperture in the blade spring 31. Lugs 29, 34 so limit movement of the lower arm 28 that the clapper 25 is maintained clear of the gongs except when impelled by its own momentum.
Patent GB-1424707-A (GB)
Title: Rotary drums
IPC: F27B7/26
Filed: 1973-05-03
Abstract: 1424707 Tube mills CREUSOT-LOIRE 3 May 1973 [25 May 1972] 21108/73 Heading B2A [Also in Divisions F3 and F4] Apparatus for supporting and driving a large rotary drum 1 e.g. a rotary kiln or a mill having track rings 2 comprises support rollers 5 each incorporating a fixed shaft 6, means permitting the roller to pivot about an axis perpendicular to that of the shaft and substantially perpendicular to the direction of the load applied to the roller by the drum, a toothed ring 7 coaxial and angularly fast with the roller, a chassis 9 mounted on the roller and rotatable relative thereto, means for constraining the chassis against rotation with the roller, and a hydraulic motor 15 and pinion and for rotating the ring 7 and mounted on the chassis 9. The shaft 6 is mounted on shoes 17 and incorporates a segment 16 with a lining 162, the abutment of said segment 76 with said shaft 6 forming the pivot about which the roller is pivotable relative to the shaft. The chassis is rotationally immobilised by damping arms 13 and 14. The segment 16 carries a key 161 having a semicylindrical surface engaging a cup 61 in the fixed shaft. The chassis 9 is provided with stabilising rollers 10, 11 and 12 disposed axially and radially of said shaft and engaging an annular rib 71 on the ring 7. The space 23 forms an oil chamber from which oil may be distributed by channels (21, 22 Figs. 3 and 4) extending through the segment 16. A detector in one of the channels may be used to produce a signal proportional to the load supported by the roller, said signal being used to control the drive torque of a motor 15 thus controlling slipping of the roller.
Patent GB-837635-A (GB)
Title: Improvements in or relating to friction clutches
Inventor: HANDLEY JOHN
IPC: F16D13/02
Filed: 1957-07-04
Abstract: 837,635. Friction clutches; linkwork. CREED & CO. Ltd. June 27, 1958 [July 4, 1957], No. 21123/57. Classes 80 (2) and 80 (3). A driven spring clutch-band 1 is connected at one end by a mounting lug 2 to an arm 5 fast with a driven shaft, and carries at its other end a mounting lug 6, opposing flat faces 20, 20 on the mounting lugs engaging three or a greater odd number of bearing rollers 9 contained in a slot 10 in a disengaging rocker 11 freely pivoting on pins 12, 13 carried by a bracket integral with the arm 5, the spring band 1 normally gripping a driving drum (not shown) but introduction of a pawl (not shown) into the path of a lug 15 carried by the rocker 11 causing the rocker to pivot, upon engagement between the lug and pawl, so that the bearing rollers 9 cam the surfaces 20, 20 on the mounting lugs 2, 6 apart, and thereby disengage the band from the drum. When the rocker 11 has been turned to its clutch disengaged position, the axis of the bearing rollers 9 is held slightly inclined to the normal joining the faces 20, 20 on the mounting lugs 2, 6, as shown. On removal of the pawl from engagement with the lug 15, the bias of the spring band 1 is sufficient to act through the faces 20, 20 upon the rollers 9 to turn the rocker 11 back to its clutch-engaged position, when a projection 17 on the rocker engages the lug 2. A-felt pad 14 carried by the rocker 11 feeds oil to the rollers 9. According to the Provisional Specification, the clutch is particularly intended for use with teleprinter apparatus, and the spring band 1 is of varying thickness to give even pressure all round the driving-drum. Specifications 794,091 and 829,134 are referred to.
Patent GB-1412098-A (GB)
Title: Drawer
IPC: A47B88/00
Filed: 1972-11-07
Abstract: 1412098 Cabinet drawers M GROZINGER 7 Nov 1972 [10 Nov 1971] 21126/74 Divided out of 1375915 Heading A4B A drawer comprises a rectangular frame formed by detachably inter-connected walls 99, 101 and a face panel 7 detachably fitted to the front wall of the frame, adjacent walls being inter-connected at the corners of the drawer by lugs 126 extending at right angles to webs 138 on one wall 99, the webs 138 being engaged in downward extension slots 129 from openings 128 in the adjacent wall 101, each wall having an upper edge forming a downwardly open channel section flange 119, 120 which receives a respectively leg 135, 132 of a right angled reinforcing member 133 which is retained by lugs 142, 143 bent out of the flanges 119, 120. One flange 120 is slotted, as at 131, to receive the reinforcing member 133. The drawers sides and bottom may have spaced slots to receive partitioning members on to support filing trays in the drawer.